At least one in five websites are blocked in the United Kingdom, with a growing number of legitimate websites getting caught up in the censorship, according to the Open Rights Group.
The Open Rights Grouped tried to access 100,000 websites with default filter settings - or "normal" filtering with nothing set as a default - and there were almost 20,000 different websites blocked. It's a frustrating system that leaves some websites, such as Sherights.com, a blog focusing on violence against women and LGBT rights, blocked and inaccessible.
"We've been surprised to find the default filtering settings are blocking around a fifth of the Alexa top 100K websites," said Jim Killock, ORG Executive Director, in a statement. "That's a lot more than porn, which accounts for around 4 percent of that list."
British ISPs aren't required to implement the filtering system, but Prime Minister David Cameron believes it should become mandatory.